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  <title>加入计算机协会家庭</title>
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      font-family: 'Arial', cursive;
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      background-size: cover;
      background-position: center;
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    img {
      display: block;
      width: 300px;
      height: 300px;
      margin: 10% auto;
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    h1 {
      color: aliceblue;
      font-size: 45px;
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<body>
  <h1>计协邀你加入群聊！</h1>
  <img src="group-img.jpg" alt="群聊二维码">

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